Evaluation of Viscoelastic Material Models in LS-DYNA based on Stress Relaxation Data

Viscoelastic behaviour of a material is often used as a probe in the field of material science since it is sensitive to the material’s chemistry and microstructure. The behaviour enables understanding of the quantity of energy absorbed by the material’s internal structure and the energy dissipated to the surroundings. The viscoelastic properties can be determined experimentally by tests such as stress relaxation, creep, or Dynamic Mechanical Analysis (DMA).